OCTAHYDROPYRROLOACRIDINE DERIVATIVES. 2. 1-ARYL-4,4,8,8-TETRAMETHYL-2,3,4,5,7,8,9,10-OCTAHYDROPYRROLOACRIDIN-10-ONES AND INTERMEDIATES IN THEIR SYNTHESIS

Article abstract of DOI:10.1007/BF00478862

A series of 9-aroyl-3,3,6,6-tetramethyl-1,2,3,4,5,6,7,8-octahydroxanthen-1,8-diones has been prepared from arylglyoxals and dimedone in a dehydrating medium; upon heating with ammonia these compounds are converted to 1-aryl-4,4,8,8-tetramethyl-2,3,4,5,7,8,9,10-octahydropyrrolo<4,3,2-m,n>acridin-10-ones.These reactions occur via the intermediate formation of tetrahydroindole derivatives.